Critical Risk →

oneclick_create_inscription

Start a OneClick Mall card-enrollment flow. Returns { token, url_webpay } — redirect the user to complete enrollment. After return to response_url, call oneclick_finish_inscription.

How to control oneclick_create_inscription ↓

What oneclick_create_inscription does on Mcp Ap2

AI agents use oneclick_create_inscription to commit financial operations through Mcp Ap2 — usually the final step of a payment, billing, or trading workflow. A call moves real money.

Critical Risk

Why oneclick_create_inscription needs a policy

This tool initiates a payment card enrollment process (OneClick Mall is a payment method in Chile's Transbank/WebPay ecosystem). Enrolling a payment card is a financial operation — it binds a card to an account for future charges. Misuse could lead to unauthorized card enrollment, enabling subsequent financial transactions. The Financial category applies as it directly commits a financial instrument/obligation.

From the tool's definition OneClick Mall card-enrollment flow, returns token and url_webpay, involves payment card enrollment (financial instrument registration)

Documented attack patterns abuse exactly the kind of access oneclick_create_inscription gives an agent:

How to control oneclick_create_inscription

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for oneclick_create_inscription:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "oneclick_create_inscription": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to oneclick_create_inscription is blocked until a human approves it. The rest of the server keeps working.

  1. Create a free account and register Mcp Ap2 — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about oneclick_create_inscription

What does the oneclick_create_inscription tool do? +

Start a OneClick Mall card-enrollment flow. Returns { token, url_webpay } — redirect the user to complete enrollment. After return to response_url, call oneclick_finish_inscription. It is categorised as a Financial tool in the Mcp Ap2 MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on oneclick_create_inscription? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for oneclick_create_inscription: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Mcp Ap2. Nothing to install.

What risk level is oneclick_create_inscription? +

oneclick_create_inscription is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit oneclick_create_inscription? +

Yes. Add a rate_limit block to the oneclick_create_inscription rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block oneclick_create_inscription completely? +

Set action: deny in the PolicyLayer policy for oneclick_create_inscription. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides oneclick_create_inscription? +

oneclick_create_inscription is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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